import java.util.Scanner;

public class Question01 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("输入一个年份");
        int year = scanner.nextInt();
        if ((year % 100 != 0 && year % 4 == 0) || year % 400 == 0){
            System.out.println("是");
        }  else {
            System.out.println("不是");
        }

    }
}
